Weighing and adding scale.



H. HATHAWAY.

WHGHING AND ADDING SCALE.

APPLIOATION FILED NOV.11, 1908.

f Wwf y 4a. JK

atented Nw,

teninfg the lever o against movement, this means consisting in this caseof a padlock 7L whose hasp passes through a hole termed in. aproject-ing lug a on the casingandthrough a corresponding hole in theforward end ot the lever g so that with Vthe padlock in place the levercannot be moved ont oit its interlocking position. llo press the lever.g' normallyY into engagement with the draft rod, l, provide asuitablespring, as shown at g, which is secured to the wall or thecasing,- and igiresses against the lever f/ with a `v fielding pressure.

The regisijerine` mechanism has 'not been si'ieciically describedbecause any suitable form oit ,registering mechanisz-n may be ein--ployed, such as that shown in my af/,iresaid Letters latent.

l. in a weighing scale the combination or a casing,y forn'iing an oilchamber whose upper and lower ends are pr( idcd with stuilingboxes, adraft rod 'tor supporting the object to be weighed, said draft rodbeingr passed through said stuliing boxes and having reciprocatingmovement therein, ahead or piston secured to said dratt rod intermediateof the stuiing boxes to resist the downward movement of the draft rod bv pressure against the oil in the casing, a spring innnersed in the oiland arranged to form a yielding resistance to the downward movement oithe draft rod, and a Weight-indicating scale, connected with said draftrod, substantially as described.

Q. ln a Weighing scale the combination of an oil tight casingprovidedwith upper. and lower shifting' boxes, a reciprocating draft rod passingthrough the casingf andI projecting tlirough said stutiing boxes, anindicator cooperating with'the draft rod to indicate the Weight or theobject, a compres sion spring immersed in the oil of the chainber andarranged to oppose a yielding resistance to the downward movement et thedraft rod, substantially as described.

3. ln a Weighing scale the combination of a draft rod for supporting theobject to he weighed, a compression spring` for resisting the p-ull ofsaid Weight, adding niechanism having' direct engagement with said raclrbar to add the successive Weights, an interlocking lever engaging saiddraft rod to hold it against movement, and means for positively lockingsaid lever against disengagement with said draft rod, substantially asde cribed.

4. In a Weighing scale the combination ot a supporting` casing, averticali",7 4movable movement, and means for loc' "means embracino' alug adding mechanism actuated by .s rod, an interlocking lever-2. nientwith said draft red against disengagcinf TD v ing', and means forsecnrin said lng, substantie as des( ,c

5. it weighing scale embracing;` in erf sruction a hollow casing,recording nism mounted therein, a cidindric termed below said cani'p'per and. lower en i draft rod i 'r L boxes and haring: er reineweighing4 and addinfr mechanism, .i I, i, ton` secured to the draft rodiinermediate oit {o} the ends ot' the cvlii'id' r, an oil being'provided for permitting the lio'w of oil from one side to the other ofsaid piston.v and a spring for resisting the downward movement of thedraft rod, substantially as de- S" scribed.

G. In a weighing' scale the combination of recordingmechanism, erasing'for containing the saine, a cylindrical oil chamber arranged beneathsaid casing, a draft rod passingl through bearings `formed in the upperand lower ends oit said oil chamber and having engagement with theweighing mechanism, a piston secured to said draft' rod' inside thechamber, means locate above 95 the piston and Within the chamber toprevent contact of the oil with the, dra'lt rod adjacent to the upperstuffing box, substan tially as described.

7. In a Weighing scale the combination ot recording mechanism, a draftrod, a cylinu drical chamber inclosing said draft rod provided withbearings at its upper and lower ends to form a close bearing for saiddraft rod, a perforated piston secured to the drait 10 rod Within thecylindrical chamber, and a supplemental head secured to the draft rodabove' the piston to prevent contact of the oil with that portion of thedraft rod lying in the upper end of the chamber, substantially asdescribed.

In Witness whereof, have subscribed tie above specification'.

HO QEA HATHAWAY.,

in the'presence ofw- Gioo. lil. Gonnann, KAfrHAinNn A, Buscar.

